ヘッダー部の属性取得;GetAttributeByName

とりあえずメモ

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#include <stdio.h>//printf とかで必要 #include<windows.h>//MessageBox とかで必要   #include <wmsdk.h> #pragma comment(lib, "wmvcore.lib")   void main(void) {    IWMMetadataEditor * pEditor = NULL;  IWMHeaderInfo * pHeaderInfo = NULL;    HRESULT hr = S_FALSE;    hr = WMCreateEditor(&pEditor);    hr = pEditor->Open(L"G:\\sampleMovie\\sample.wmv");    pEditor->QueryInterface(IID_IWMHeaderInfo, (void**) &pHeaderInfo);    WMT_ATTR_DATATYPE attType;  WORD streamNum = 1;  WORD cbValue = 0;    //文字列の適切なサイズを取得  hr = pHeaderInfo->GetAttributeByName(&streamNum,   g_wszDeviceConformanceTemplate, &attType, NULL, &cbValue);    WCHAR *pbValue = (WCHAR *) new BYTE[ cbValue ];    if( ! pbValue )    {     printf("割り当て失敗\n");  }      hr = pHeaderInfo->GetAttributeByName(&streamNum,   g_wszDeviceConformanceTemplate, &attType, (BYTE *) pbValue, &cbValue);    printf("%S\n",pbValue);//L1と出力    MessageBox(0,0,TEXT("OK"),0); }